Lubricated, split ring, stopcock



F. J. scHwr-:ITZER v LUBRICTED, SPLIT RING, STOPCOCK y, Pater-ned Jn. 4,41'9ss' I LUnlcA'rEn, sPLi'r'nlNG, srorcocn Frank J. Schweitzer, Brea, Calif., assignor of onel half to William D. Shaffer, Brea, Calif.

Application september z3, 193s, sensi NQ.' 102,"197 Y. 11 omini. (ci. asiiop This invention is a valve in Ythe class of stOpcocks having a ring closure and a core operative, .in the body of the cock to shift the ring to open or to closed positions.

' 5 An object of the invention is to provide a simple, substantial,` practical and effective stop-cock of few and vinexpensive construetional parts, 'and provide a stop-cock including a stemmed core rotative in the body .of the device substantially without frlctional resistance and operative` upon la split ring, closure member to readily turn it from one position to another while under high pressure.

Further an object is to provide a practical and convenient means to eEectually lubricate the working parts of the stop-cook. The invention consists of certain advancements in this art as ,setforth in the ensuing disclosure -and having, with the above, additionalobjects vand advantages as hereinafter developed, and zd'whose construction, combination and detailsof means, andthe manner of operation will be made manifest in the description ofthe herewith illustrativeembodiment; it being understood that modifications, variations and adaptations may be resorted to within the scope, principle and spirit of the invention as it is more hereinbelow. y

Figure 1 is a plan of the cock shell and its ine--- sides; 4its bonnet being removed.

Figure 2 `is anaxlal section of the stop-cock.

' y Figure 3' is a'fperspective of the 4stemmed core.

- AFigure 4 .isa perspeetiveo'f the partly brokenawayclosurering.

Figure 5, is an inside 'elevation of a portion of -the ring showing its core-engaging lugs,

A Figure 6 is a sectional detail showing alubricatin g device.

, [The valve or stop-cock comprises a body or shell 2 having diametrically'opposite.;iiow ports ca 3 4, leading from a cylindrical, transverse, body bore surface 5 closed by the shell vbottom 6 and,

at the topby a-bonnet 1 yseating von'a gasket 8 around the rim of the bore 5` and being :fastened by studs and-nuts 9. l Expansively and rotatively,v snugly iitting'in the .bore l is a iirm'fwallemsplit ring i6 having a length somewhat less than thedepth of the bore 5- ao as not to drag at .the ends .of the ring on Vnear surfacesy o! the shell parts. Between its 60 ends the ring I0 has diametrically opposite flow ports Il--i2 to be turned into port-openingregister with relative ports 34-4 in'the shellvow through the shell beingv stopped unless the ports are thus turned into register.

u a feature or this invention is in nie means for passing through the center of the port I.-I the ring inclined lug i4; this lug being disposed above the port I I andincliriing in the direction of theupper 10 4 tudinal line along the ring I0 passing through the center of the port II and an internal lug I5is 4115 directly claimed ring; the lower end ofr the core having a-trun- 30 21e bonnet 1 and a packing'gland 23 thereof, for

vent the ring I0 from 4tliiiting,bodily on the core,

still" provide for free endwise, contractive lmovewise' indented at `-Sil to receive a shoulder Il of -to have no turning engagement and serve onlyl to stop endwise movement of the indented corners eiecting the motion of the port ring I0. As hereshown, thering is helically split on the line I3' from end to end similarly to a bevel cut piston ring and the opposed edges of the split slidably bearing on each other, and the line of the splitv 5 being of resilient metal. At its'upp'er end the ring is provided with an internal, slightly helically end of the slit I3;`that is, inclining toward the intersectin of the slit with the -edge of the port il. The lug I4 is slightly offside of a longiprovided on the inside of the ,lower end ofthe ring I0 and is located on the opposite side of the said longitudinal line; -the inclination of the lug I5 being toward the point of intersection of the lower end of the slit I3 with the port -iIV in the 20 ring I0, Fig. 5.-

The slit I3 is of left-hand pitch oiA about 40 angle and the helical pitch oftheflugs I4I5 is very much less (is about 8 angle) in-a righthand direction; these angles not being fixed or 25 limited. 4 4 i The ring turning device comprisesa cylindrical core 20 slightly less than'the' bore of the slit ring l0 and of about the samelength asrthe nion 2i turnably stepped 4in the shell bottom 6; thecore end being spaced therefromto turn free. A stem 22 of the ore extends upward through pplication of a hand wheel or operating tool, as 35 desired. An. end thrust washer 24 is interposed betweenthe top of the core 2li and the bonnetj.

'The core 20 is provided with anl upper recess 26 l complementary'to butwider than the'ring lug I4, .Y and with alow r recess 21 complementary to and 40 wider than the ring lug I5. It isdesirable to preespecially at the corners having faces opposed to the-corners L and R having the lugs |l--I5, and

ment lof these latter corners. This is obtained by provision of a iixed, lower. lateral Vshoulder 2l entering and having some lost motion in a ,relative indent!! in the lower end edge of ring Il,

Fig. 4:.` 'I'he upperfend edge of ring I 0 is like-`| 50 the upper end ofcore 20. The shoulders 28e-#ij are shorter than their respective ring indents so as of the ring I0; leaving the corners R and L free lto ride endwise and to contract when the coreV 20 engages either lug Il or lug I5. To facilitate assembly of the ring on the core, one or both.of the shoulders 28.-3I may be removably attached to the core 20.

It vwill now be seen that with the ring and core in place in the -valve shell 2, the split ring III will expand into snug, concentric bearing on the bore 5, and the ring lugs II--IS will lie in interlocking relation in their core recesses'28-2l. If, with the parts inpositionas shown .in Fig. 2, the stem and core 20 be turned, as usual to the left to open the valve or cock, the left side wallof the lower recess 21 will move into engagement with the near side-face of the lower lug I5 of the ring I0 and the contiguous llower. corner L, Fig.. I 4, will be jammed against and ride down on theopposed near reacting face of the inclined slit.

I3, all withfsa tendency to contract the end L of the ring from the wall of the shell. The ring I0 will therefore be readily turned until its ports II--Iil` register with the coordinate ports 3-4 .in the shell 2. Conversely,when the valve is to be closed the core 20 is turned inl a righthand Vdirection andone wall of the top recess 20 will move against the near face of the upper lug I4 oi.' the closure ring I0. This coaction will force the upper corner R.v of the split ring III to ride up on the opposing surface of the relative portion of the slit. I3 at the corner R of the ring. The re.-

action on the corner R will cause' it to slightly contract and eil'ect an easy rotation of the ring I 0 until the several ports-3 4 are again coveredand closed by the blind or imperforate wall portion of the ring.

In some uses of the stop-cocks it may be desirable to introduce a lubricant between the shell and the closure ring Ill, and forv this purpose the bore surface 5 is provided with a series of oil channels 5B from which lead tapped ducts 35 having inlet check valves 36 adapted for the attachment of suitable grease gun means (not shown) whereby to force the lubricant into the bore channels 5* and contract the split ring sufficiently to permit a thin film of lubricant to body or shell ofthe valve.

The core 20 has a cross-port 20* alined with the` opposite ring ports -I I-I2.

What is'claimed is: y 1. A stop-cock having a shell'with a bore and be forced between the ring and the bore of the ports leading therefrom, an expansive', helically split closure ring seated in the bore and having ports registerable with the shell ports, and operative means engageable with the split Vring whereby to move either of diagonally oppositeA corners of the split side into engagement with,

"and slide it on, the opposite split surface to edect a contractive release of therlng from its 'seat' in the bore. i'

2. A stop-cock having a ported shell with a bore, a ported closure in the bore comprising a helically split ring expansively seating in' the bore and having flow ports, and rotary means in the ring cooperating with ring corners at oppositeends of the split to relatively move either corner on the opposite split surface to contractively draw the ring from its seat. f 3. A stop-'cock4 having a-ported, bored shell',

a closure ring expansively seating in the bore and,`

being diagonally split on one-side fr om end to end and the-edges of the split being mutually y engageable, a rotative element mountedJn the cock and selectively engageable with corners'of the ring at ends of the slit whereby to longitudinally shift a selected corner on opposingvsplit` surface to radially contract the ring from fully seated relation in the bore.

4. A'stop-cocli having a ported bore, acliag-I onally split closure ring expansively seated in thebore'and the surfaces of the ring being interengageable, and rotary means lselectively engageablewith either of diagonally oppositey corners of the ring at ends of the split to ride the selected corner on the opposed surface of the with upper and lower corners, at' theA ends of thev split, of'the ring; whereby to relatively move either corner on its opposed surface of the split to eil'ect a contraction of the ring from its seat in the bore. i i v r s 6. A stop-cock as set fonth in claim 5,and said means including a device to limit endwise shift of the ring.

7 In a stopcock,a ported ring part and a 1'0- tative core part therein, the ring being diagonally split anclflaving the surfaces of the split mutuallyengageable, said partswhaving means at upper and lower corners at thev end of the split for lrotationally connecting the parts and to ef-' fect a contrastive, riding action of the selected corner, `subjected to rotating pressure, on ,the opposed,split surface. y l 8. A stop-cock as set forth in claimJ, and lin which said means includes a set of lugs on one of said parts interengaging in respective recesses in the other part; the lugs being located con-4 tiguous to upper-and lower corners ofthe ring.

9. In4 a stop-cock, an expansibly seating, di-

agonally split, ported, closure ring having internal lugs on the upper and lower corners of the ring at thev ends of the s'plit,and a rotary core in the ring having recesses in which the lugs lwhich there is means to limit relative, axial shift of the ring and the core. 1 

